Door-lock and burglar-alarm.



' No. 718,454. PATENTED JAN. 13, 1903.

L. H. HANDY & c. s. HOSPORD. Doon LOCK AND BURGLARALARM.

APPL' IIIIIIIIIIIIIIIIIIII 2.

@kf/5M' Unirse STATES PATENT OFFICE.-`

LUCIEN H. HANDY, OF SAN FRANCISCO, AND CHARLES S. HOSFORD, OF

BERKELEY, CALIFORNIA, ASSIGNORS TO GOLDEN GATE NOVELTY MAN- UFACTURING CO., OF SAN FRANCISCO, CALIFORNIA, A CORPORATION DOOR-LOCK AND BU RG LAR-ALARM.

SPECIFICATION forming part of Letters Patent No. 718,454, dated January 13, 1903.

Application led August 8, 1902.

To all whom t may concern:

Be it known that we, LUCIEN H. HANDY, re siding in the city and county of San Francisco, and CHARLES S. HosFoRD, residing at Berkeley, county of Alameda, State of California, citizens of the United States, have invented certain new and useful Improvements in Burglar-Alarms and Door-Locks; and we do hereby declare the following to be a full, clear, and exact description of the same.

Our invention relates to the class of devices for locking doors and giving the alarm upon au attempt to open the same.

Our invention consists in the novel combinations, construction, and arrangement' of parts, which we shall hereinafter vfully describe and claim.

The object of our invention is to provide a simple and effective device of this character.

Referring to the accompanying drawings, Figure 1 is a perspective view of our device as applied to a door, the alarm and lock being set and ready to operate. Fig. 2 is a front View, partly broken, of our device, both bolts being projected in operative or set position. Fig. 3 is a rear view of the device, the back wall of the casing being removed. Fig. 4 is a section on line x 0c of Fig. 2. Fig. 5 is a view of the interior front of the casing C, both bolts being removed. Fig. 6 is a detail elevation of the inner surface of the back wall of casing C. i.

A, in Fig. 1, is a portion of a door, A is a portion of the door-casing, and B is the knob by which the usual latch is operated. Upon the inside face of the door, in any suitable convenient location relatively to the knob, (here shown in Fig. 1 as just above it,)`is the casing C, forming the housing and carrier for the various parts of our device. This casing may be constructed in any suitable manner. A good construction is that here shown, in which the casing is formed at one end'with a lip c, Fig. 4, overlapping the door edge, and a removable back plate o, Fig. 6, lying flat against the door-face. Screws c2, through the casing and through the lip c, pass into the door and hold the casing in place. Within Serial No. 118,904. (No model.)

'Figs 2 and 4, which extends at right angles through a slot or opening c3 in the front wall of the casing. The slide-bar D may be seated to move perpendicularly in any suitable manner; but the construction here shown in Figs. 4 and 5 we considera good one. It consists of two rivets d, passing through two elongated slots d2 in the bar and through the front wall of the casing and into the base-shell E, Fig. 4, of the gong or bell F, whereby the latter is secured to and carried by the casing. The trip-arm d of the slidebar. also extends freely into the shell E in a groove or channel e, cut in its top, Fig. 4. Within and between the shell and gong is seated in usual manner the alarm mechanism, whichmay consist of any suitable and customary parts. In the present case in order to illustrate a suitable alarm device We show in Fig. 2 a plate G, on the back of which is an actuating-spring g, Fig-4, wound by an arbor g', upon the forward end of which the bell F is screwed, said bell serving, when screwed home, as the key by the turning of which the spring is wound. On the outer face of plate G is carried the usual gear-train g2, the terminal member of which vibrates the escapement-pawl g3, to which the hammer g4 is connected by the wire g5, Fig. 2.

The extremity of the trip-arm d of the slidebar D within the casing C projects, as shown in Figs. 2 and 4, into the path of movement of the hammer-wire g5, and when said triparm is raised and held up it will lift up under the hammer-wire g5, and thereby throw and hold the escapement-pawlg3 into engagement with the terminal member of the gear-train, as shown in Fig. 2, thereby locking said train and arresting all movement, so that the bell will not ring; but when the trip-arm d is lowered it will free the hammer-wire g5 and will thereby give free movement to the pawl g3, which, vibrating under the impulse of the gear-train derived from spring g, will cause the hammer to strike the gong and sound the alarm. The normal position of the trip-arm d is a depressed one to free the alarm mechanism, and to secure this result a spring may be suitably located to affect the slide-bar D or its arm d to hold them down. We have here shown in Figs. 2 and -i for this purpose a spring g* on the back of plate G, which bears on the trip-arm d and holds it down. Now in order to control this trip-arm for the needs of the device we have the following parts: Mounted within the upper portion of the casing C and adapted to slide therein horizontally is the setting-bolt H, Figs. 2 and 3. The rear end 7i of this bolt projects from the casing, enabling it to be readily grasped and manipulated. Its forward end is provided witli a bevel-faced latch-head 71,', Figs. l and 3, which is adapted to be projected beyoud the casing-lip c. A friction-spring 72,2, Fig. 5, holds this bolt true in sliding, while a coil-spring h3, Figs. 3 and 4, secured to the bolt and to the casing-plate c, holds said bolt normally retracted. A small projection 714, punched from the face of the bolt, comes in contact with the inner end of the casing and serves to limit its retraction. The upper edge of this setting-bolt H is formed at h5, Fig. 3, with an inclined plane which plays under a projection C73, extending from the slideplate D, Fig. 4. The relative position of these parts is such that when the setting-bolt H is in its normal or retracted position the inclined plane 7150i? said bolt does not contact with the projection d3 of the slide-plate D, but lies far enough below it to permit said plate D to occupy its normally depressed position; but when the bolt H is projected theinclined plane h5 passes under and in contact with the projection cl3, and thereby lifts and holds the slide-plate D up, Fig.

Within casing C is horizontally and slidably mounted the locking-bolt K, Fig. 3. The rear end 7c of this bolt projects from the casing, wherebyit may be manipulated. Its forward end 7u' is adapted to be projected th rough the lip c of the casing. This bolt is steadied by a retaining-spring 7a2, Fig. 6, which lightly engages notches 7a3 in its lower edge to suiliciently define its projected and retracted positions. Its movement is limited by a notch 7a4 in its upper edge engaging with its terminal shoulders the end wall of casing C, Fig. 3. The upper edge of this locking-bolt K is formed with an inclined plane 765, Fig. 3, which is reversed relatively to the inclined plane of the setting-bolt, and it plays under a second projection (7" from slide-plate D, Fig. 4. The arrangement is such that when the locking-bolt K is retracted it bears up under projection d" and holds slide-plate D up, and when said bolt is projected it frees the slideplate D and allows the latter to move down.

Upon the door-casing A is a keeper-plate L, Fig. 1. The projecting edge of this plate is formed With a lip Z, which is adapted to receive the engagement of the bevel-faced latchhead 7L of setting-bolt H, and it is also provided with a socket Z' to receive the end 7c of the lock-bolt K. This socket Z', it will be noted, is Wider than the thickness of the bolt end 7c', the difference being sufficient to permit the door A to be opened far enough to remove, by this act of opening, the latch-head 72. from the lip 7 of the keeper-plate L.

The following description of the operation of our device will assist in a better understanding of the construction and arrangement of the parts we have described, in addition to giving their functions and purposes.

Suppose the door is to remain on its simple knob-latch B, unaffected by our device. Under this condition both bolts H and K are retracted, and the door is thus left unlocked. Now, although the alarm mechanism is Wound up and normally under tension, itis prevented from operating because, though the settingbolt H has relieved the slide-bar D and the spring g]l is tending to press down the trip-arm d, and thus to relieve the alarm mechanism, the lock-bolt K being retracted holds up slidebar D and its trip-arm c7, therebylocking the alarm by holding the escapement-pawl g3 and keepingit in engagement with the gear-train g2. Suppose, now, the deviceis to be set. The rst act is to project the setting-bolt H so that its latch-head 71, will engage the lip Z of keeper-plate L, and said latch-head will under the influence of the spring 7a2 positively engage said lip, and the latter Will hold the bolt projected against the power of the coilspring h3 to retract it. The next act is to project the lock-bolt K so that its end 71", passes into the socket Z' of the keeper-plate. The dooris now locked. The alarm mechanism is, however, still locked, for,although the bolt K by its projection has relieved the slide-bar D and its trip-arm d, the projected bolt H, by its inclined plane 71.5 pressing under the projection d3 of the slide-bar, still holds up said bar and its trip-arm d, thus continuing the lock on the alarm mechanism. The door is now, as stated, locked, and the alarm-lock is set. Finally,suppose a visit from an intruder. He pushes open the door to the extent allowed by the Wide socket Z in the keeper-plate, in which the bolt end 7c is seated. This movement of the door (which, however, is still secure against opening) is sufficient to carry the latch-head 7i of the bolt H away from the lip Z of the keeper-plate L. Instantly the spring 713 will retract bolt H,and the slide-bar D will now be free of both bolts I-I and K and subject only to its own spring gl, which by pressing down the trip-arm (Z will release the alarm mechanism, and the bell will sound. The alarm ofthe bell cannot be arrested from without and its noise will be incessant until the occupant of the room stops it by either retracting bolt K or projecting bolt H, thereby lifting the trip-arm d again to lock the alarm.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

IOC

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l. In a burglar-alarm and door-lock, the combination oit'l a setting-bolt, having a latchhead on its forward end, a lixed lip on the door-casing over which said latch-head works for holding said bolt projected when the door1 is closed and releasing it when the door is moved to open it, means for retracting said bolt when released, an alarm mechanism and a locking and tripping means controlled by the setting-bolt, to lock the alarm when the bolt is projected and to release it when the bolt is retracted.

2. In a burglar-alarmy and door-lock, the combination of a setting-bolt, having a latchhead on its forward end, a iXed lip on the door-casing over which said latch-head works, for holding said bolt projected when the door is closed and releasing it when the door is moved to open it, means for retracting said bolt when released, an alarm mechanism, a trip-arm to lock and to release said alarm mechanism and means actuated by the setting-bolt for controlling the trip-arm to lock the alarm mechanism when the bolt is projected and te release it when the bolt is retracted.

3. In a burglar-alarm and door-lock, the combination of a setting-bolt, means engaging the forward end of said bolt, for holding said bolt projected when the door is closed and releasing it when the door is moved to open it, means for retracting said bolt when released, an alarm mechanism, a trip-arm to lock and to release said alarm mechanism, a slide-bar carrying the arm, and having a projection, and an inclined plane on the settingbolt acting on said projection to move the slide-bar to lock the alarm mechanism when the bolt is projected and to release it when the bolt is retracted.

4. In a-burglar-alarm and door-lock, the combination of a setting-bolt, a locking-bolt, an alarm mechanism, means actuated by the setting-bolt for locking the alarm mechanism when said bolt is projected and releasing it when' the bolt is retracted and means actuated by the locking-bolt for locking the alarm mechanism when said bolt is. retracted and for releasing it when the bolt is projected.

5. In a burglar-alarm and door-lock, the combination of a setting-bolt, a locking-bolt, an alarm mechanism, a trip-arm adapted to lock and to release said alarm mechanism, a slide-bar carrying said trip-arm and having independent projections, and a relatively opposite inclined plane on each bolt adapted by contact with the projections of the slide-bar to actuate the trip-arm to lock the alarm when the setting-bolt is projected and the lockingbolt retracted and to release the alarm when the positions of the two bolts are reversed.

6. In a burglar-alarm and door-lock, the combination of a setting-bolt, means for holding said bolt projected when the door is closed and for releasing it by the movement of the door in opening, means for retracting the bolt when released, an alarm mechanism, a means to lock the alarm mechanism when said bolt is retracted and to release it when it is projected.

7. In a burglar-alarm and door-lock, the combination of a locking-bolt, akeeper-socket therefor sufticiently large to permit an opening movement of the door when the bolt is in said socket, a setting-bolt, an engaging lip therefor to hold said bolt when projected, and adapted by the opening movement of the door to release said bolt, means for retracting said setting-bolt when released from its engaging lip, an alarm mechanism, and means controlled by the setting-bolt to lock the alarm when said bolt is projected, and to release it when the bolt is retracted.

8. In a burglar-alarm and door-lock, the.

combination of a locking-bolt, akeeper-socket therefor sufliciently large to permit an opening movement of the door when the bolt isin saidsocket, a setting-bolt, an engaging lip therefor to hold said bolt when projected, and adapted by the opening movement of the door to release said bolt, means for retracting said setting-bolt when released from its engaging lip, an alarm mechanism, means controlled by the setting-bolt to lock the alarm when said bolt is projected, and to re-y lease it when the bolt is :retracted and means actuated by the locking-bolt to lock the alarm mechanism when said bolt is retracted and to release it when it is projected.

9. In a burglar-alarm and door-lock, the combination of a setting-bolt, a locking-bolt, a keeper-plate having a lip for engaging and holding the setting-bolt when projected and a socket for engaging the locking-bolt-When projected, said socket being large enoughV to permit the door to have an opening movement sufticient to release the setting-bolt from the engaging lip of the keeper-plate, a spring to retract the setting-bolt when released, an alarm mechanism, means actuated by the setting-bolt for locking the alarm mechanism when said bolt is projected'and releasing it when the bolt is retracted, and means actuated by the locking-bolt for locking the alarm mechanism when said bolt is retracted and for releasing it when the bolt is projected.

10. In a burglar-alarm and door-lock, the combination of a setting-bolt. a locking-bolt, a keeper-plate having a lip for engaging and holding the setting-bolt when projected and a socket for engaging the locking-bolt when pro` jected, said socket being large enough to permitthedoor to have an opening movement sufiicient to release the setting-bolt from the engaging lip of the keeper-plate, a spring to retract the setting-bolt when released, an alarm mechanism, a trip-arm adapted to lock and to release said alarm mechanism, a slide-bar carrying said trip-arm and having independent ICO projections, and a relatively oppositeinl In Witness whereof We have hereunto set our clned plane on each bolt adapted by Contact hands.

with the projections of the slide-bar to aetu- LUCIEN H. HANDY.

ate the trip-arm to look the alarm when the CHARLES S. HOSFORD. setting-boltis projected and the looking-bolt Vitnesses:

retracted and to release the alarm when the WALTER F. VANE,

positions of the two bolts are reversed. D. B. RICHARDS. 

